Be sure to answer all parts. When 1.95 g of Co(NOsh ia dissolved in 0.450 L...
When 1.95 grams of Co(NO3)2 is dissolved in 0.250 L of 0.220 M KOH, what are the [Co 2+], [Co(OH)4 2-], and [OH-] if Kf of Co(OH)4 2- = 5.00x10^9?
Be sure to answer all parts. If 2.25 g of CuSO4 is dissolved in 9.07 × 102 mL of 0.320 M NH3, calculate the concentrations of the following species at equilibrium. Cu2+ × 10 MEnter your answer in scientific notation. NH3 M Cu(NH3)42+ M
Be sure to answer all parts. If 2.10 g of CuSO4 is dissolved in 8.75 × 102 mL of 0.310 M NH3, calculate the concentrations of the following species at equilibrium. Cu2+ × 10 M Enter your answer in scientific notation. NH3 M Cu(NH3)42+ M
Be sure to answer all parts. If 2.10 g of CuSO4 is dissolved in 9.05 x 102 mL of 0.380 M NH3, calculate the concentrations of the following species at equilibrium. Cu2+ 11.8 X L:14 V Enter your answer in scientific notation. NH3 Cu(NH3)42+
Be sure to answer all parts. A student mixes 50.0 mL of 1.00 M Ba(OH)2 with 76.2 mL of 0.450 M H2SO4. Calculate the mass of BaSO4 formed. g Calculate the pH of the mixed solution.=
Be sure to answer all parts. The equilibrium constant Kc for the reaction H2(g) + CO2(g) ⇌ H2O(g) + CO(g) is 4.2 at 1650°C. Initially 0.72 mol H2 and 0.72 mol CO2 are injected into a 4.5−L flask. Calculate the concentration of each species at equilibrium. Equilibrium concentration of H2: M Equilibrium concentration of CO2: M Equilibrium concentration of H2O: M Equilibrium concentration of CO: M
Be sure to answer all parts. A solution contains 0.395 mol of NaCl dissolved in 9.81 mol of water. (a) What is the mole fraction of NaCl? (b) What is the molality of the solution? m
Be sure to answer all parts. Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 5.00 L of air under the stratospheric ozone conditions of 221 K temperature and 1.95 x 10 atm pressure? 匚 7-10□ molecules 2
Be sure to answer all parts. The equilibrium constant K, for the reaction Hz() + CO2() H2O(g) + CO(g) 1s 4.2 at 1650°C. Initially 0.76 mol H2 and 0.76 mol CO2 are injected into a 4.5-L flask. Calculate the concentration of each species at equilibrium. Equilibrium concentration of H2: Equilibrium concentration of CO2: Equilibrium concentration of H20: Equilibrium concentration of CO:
Be sure to answer all parts. A sample of air occupies 4.70 L when the pressure is 2.70 atm. (a) What volume does the sample occupy at 6.40 atm at the same temperature? L (b) What pressure is required in order to compress it to 0.0450 L at the same temperature? atm